Stream R W, Whitson E T, Honrubia V
J Aud Res. 1980 Jul;20(3):233-43.
A white noise sound stimulus was emitted successively in an anechoic chamber across 24 loudspeakers equally spaced in the horizontal plane in a semicircle with diameter of 11 ft. Eye movements produced by each of 20 normal-hearing young adults in the center of this arc who tracked the sound at 10 different velocities (15--180 degrees/sec) were recorded with standard ENG methods. During each rotating cycle of the stimulus the eyes were able to follow the sound with discrete saccades, but did not produce nystagmic-like movements. Increased stimulus velocity resulted in (1) diminution of the amplitude of the tracking cycles, (2) decrease in the number of saccades, and (3) increase in the average velocity of the eye. Ss performed better with lights on than off. The additional quantitative findings from the present study further indicate the limitation in the ability of human Ss to localize a moving acoustic source in space.
在消声室内，通过24个扬声器连续发出白噪声声音刺激，这些扬声器在水平面上等距分布在一个直径为11英尺的半圆中。采用标准的眼震电图（ENG）方法记录了位于该圆弧中心的20名听力正常的年轻人在以10种不同速度（15 - 180度/秒）跟踪声音时产生的眼球运动。在刺激的每个旋转周期中，眼睛能够通过离散的扫视跟随声音，但未产生类似眼球震颤的运动。刺激速度增加导致：（1）跟踪周期的幅度减小；（2）扫视次数减少；（3）眼睛的平均速度增加。受试者在有灯光时的表现优于无灯光时。本研究的其他定量结果进一步表明了人类受试者在空间中定位移动声源能力的局限性。
